Slagging-machine for furnaces



Patented May 18, 1920.

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E. w. CLARK AND F. c. CLARKE. SLAGGING MACHINE FOR FURNACES.

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E. W. CLARK AND F. C. CLARKE. SLAGGING MACHINE FOR FURNACES. APPLICATION FILED nov. 15. 1911.

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EARL W. CLARK, OF SHARON, AND FRANK C. CLARKE, OF NEAR SHARON, PENNSYL- VANIA.

SLAGGING-MAOI-IINE FOR summons.

Application filed November 15, 1917.

To all whom it may concern Be it known that we, EARL W. CLARK and FRANK (J. CLARKE, citizens of the United States, and residents, respectively, of Sharon, in the county of Mercer and State of Pennsylvania, and near Sharon, in the county of Mercer and State of Pennsylvania, have invented a certain new and use ful Improvement in Slagging-Machines for Furnaces, of which the following is a full, clear, and exact description.

This invention relates to an apparatus for slagging open hearth furnaces. It is well known to those skilled in the art to which this apparatus pertains, that the slagging line of an open hearth furnace is made up or repaired after each heat, by men called slaggers, who stand at the charging openings of the furnace, and by means of shovels throw dolomite or whatever material is used in making up the banks, into the furnace and onto the banks, the material having been first piled up on the charging floor in front of the charging doors. This work requires the services of several men for a period of time depending upon the extent to which the banks of the furnace have been fused or fluxed away by the slag or charge of metal just tapped.

It is customary to assign one slagger to each furnace, and since the banks are made up only after the metal is tapped out and the interval between tapping of a given furnace runs from between six to twelve hours, the men work in groups of five to eight, and make up the banks of the furnaces of any group in the order in which they are tapped. This Work requires the entire time of the men assigned to it, since 'while they may not be engaged in this work at all times, nevertheless the work is of such a nature that it is physically impossible for a man to work at it steadily.

This slagging is done under very adverse conditions since the heat is quite intense, and the slaggers must throw the material a considerable distance. In consequence it is often the case that the banks are not properly slagged, and that the material is not evenly distributed, these resulting in waste of material and subsequent injury to the furnace during the ensuing heat.

One of the objects is to provide a machine by which the slagging can be accomplished Specification of Letters Patent.

Patented May 18, 1920.

Serial No. 202,118.

with mechanical means rather than by hand, and in such a manner that material will be distributed more accurately and uniformly over the banks, thus effecting a saving of material and obtaining more efficient results. Further the invention aims to provide a machine for furnace slagging purposes which is more cflicient than hand labor as regards the time required for slagging, thus reducing the labor cost, and increasing the output of the furnace by reducing the time that the furnace is idle.

The above and other objects are accomplished by our invention which includes a charging machine or apparatus requiring simply for its operation the services of two men only, an observer and the operator of the machine. This machine in the preferred form of our invention is used in connection with a regular furnace char ing machine. although it can be constructe and operated independently of the latter. In any event, it includes a material delivering member which is designed to be inserted into the open door of the furnace and to be manipulated in such a way that the discharge end of this member can be movedabout to any part of the furnace desired, and cause the material to be deposited evenly over all portions of the furnace banks. This material can be supplied to the material dlstributin or discharging member from a hopper, either located and supplied with material outside of the furnace, or from a hopper which is adapted to be inserted with the distributing member into the furnace through the charging door. In either event the movement of the distributing member and the rate of feed of the material is controlled by the operator from the exterior of the furnace.

Our invention may be further briefly summarized as consisting in certain novel details of construction and combinations and ar rangements of parts which will be described in the specification and set forth in the appended claims.

In the accompanying sheets of drawings wherein we have shown two forms of our invention, Figure 1 is a view partly in side elevation and partly in section, showing our improved slag machine, this view showing the furnace in transverse section, but omitting the major portion of the wheeled platform and carriage on which the conveying and distributing parts of the apparatus are mounted; Fig. 2 is a plan view of the same on a reduced :alc but showing the parts omitted from Fig. 1; Fig. 3 is an enlarged sectional. view of a distributing portion of the apparatus; Fig. 4 is a transverse sectional view substantially along the line 4% of Fig. 2, but showing the parts on an enlarged scale, this view showing the wheeled platform and carriage on which the operat ing parts are supported, and showing further, the means for supplying the slagging material to the distributing mechanism; Fig. 5 is a view similar to Fig. 3. showing a modification in which the feed hopper is designed to be inserted into the furnace; Fi 6 is a plan View of the apparatus shown in Fig. 5; Fig. 7 shows in plan the operating mechanism and part of the arm or socalled peel not seen in Figs. 5 and G; and Fig. 8 is a transverse section through the hopper of Figs. 5 and (J.

In Figs. 1 and 2, ll) represents in vertical section and horizontal section respectively. an open hearth furnace having charging doors or openings 11. the furnace which is here shown somewhat conventionaliy, being of the usual and well-known construction having at the junction of the bottom or floor and vertical walls, inclined banks 12 which are covered with dolomite or other material indicated at 13 in Fig. 1. A series of these furnaces are usually arranged in a row, and in front of these furnaces there is generally provided a track 14 (see Fig. 1), known as a charging track, along which are run cars carrying boxes containing charging material for the furnaces. Outside of, or beyond the charging track 14 are the rails 15 for what is known as the charging machine. which is designed to pick up the charge containing boxes, insert them into the furnace through the charging doors, invert them so as to dump the contents therefrom, and then withdraw the empty boxes from the furnace.

In carrying out our invention we prefer to use as a part of the slagging apparatus, the regular or standard charging machine, although if desired, a complete slagging machine which is wholly separate and distinct from the charging machine may be utilized. In several figures of the drawing we have shown a charging machine modified to ac commodate our invention, this machine including a frame 16, with wheels adapted to run along the track rails 15, the latter being parallel to the line of furnaces. The machine as a whole can be propelled along the tracks 15 by any suitable source of power such as an electric motor 17 (see Fig. 2). The frame is provided with rails 18 which are at right angles to'the rails 15 and to the furnaces, these rails 18 accommodating a carriage 19 which is designed to be moved by one or more motors 20, back and forth, or away from and toward the furnaces.

Iivotally mounted on this carriage to swing about a horizontal axis is a housing 21 which can be raised and lowered by a suitable motor 22. This housing accommodates a so-callcd peel 23, which at its forward end. shown at 24, is normally designed to engage in. an appropriately shaped part of each of the charge. containing boxes, this end 24 being reduced to form a narrow neck, and having at its extreme end a flanged portion 2 To hold the box securely onto the end of the peel, a locking bolt or rod 25 which can be moved by hand in an endwise direction, extends centrally through the peel. This is shown most clearly in Fig. 5, and its adapt ability for holding part of the slagging an paratus of our invention will be explained subsequently. This peel 23 is rotatably mounted in the housing 21 to invert and dis charge the contents of the boxes, and for that purpose it is geared to a turning or rotatinp motor 26 (see Fig. 2). This motor and the turning of the peel has no function in slagging the furnace, but it is mentioned as a part of the brief but general description of the charging machine.

It will be seen therefore, that the charging machine can be run along the track rails 15 so that the peel can be properly positioned with respect to any charging door of any of the furnaces, and that the peel can be moved toward and inserted in a furnace, or withdrawn therefrom, and can be raised and lowered as circumstances require.

For the purposes of our invention in its preferred form, we mount on the frame 16, in any suitable manner, a hopper 27, into which a quantity of dolomite or other suitable slagging material may be placed, and from which the slagging material may be fed into a second hopper by a conveyer or e uivalent device 28, which is shown in F1 s. 2 and 4.

dditionally the slagging machine includes certain apparatus which is designed to be supported on the peel 23, this apparatus in its preferred form bein best shown in Fig. 1. This includes a casting 29 appropriately shaped to receive and to be temporarily fastened to the forward end 24 of the pee], in preciselythe same manner as the latter is temporarily fastened to the char e containing boxes in the ordinary use of t e charging machine, and further, this apparatus includes in so far as its mounting on the peel is concerned, a frame 30, which is at the rear of the casting 29, and fits down over the rectangular shaped housing 21 which receives the peel, this frame being best shown in Fig. 4.

It will be understood that the charging part of the apparatus can be picked up and effectively supported, in the manner above explained, on the peel so that it can be carried about on the latter, and after the slagging operation is completed, it can be disconnected from, and deposited by the peel on a suitable support, so that the charging machine can be used in the ordinary manner for charging purposes.

Referring again to the charging apparatus, the frame 30 supports a hopper 31 (see Figs. 1, 2 and 4) which when the carriage is properly positioned on the main frame 16, can be supplied with slagging material from the main hopper 27 by means of the conveyer 28. This slagging material is designed to be conveyed forwardly from the hopper 31, preferably by a screw conveyer 32, throu h a pipe 33, which extends forwardly from t 1e hopper 31 over the peel, through the casing 29, and a suitable distance beyond the same, the screw conveyer 32 extending along the bottom of the hopper 31 as shown in Fig. 1 so as to feed the material forwardly along the pipe 33. At the forward end of the pipe 33 there is provided an additional relatively movable conveyer and distributing device which is swiveled to the pipe 33 so as to swing horizontally through any desired are relative to the pipe 33. For this purpose we provide at the forward end of the pipe 33, a casting 34, shown in elevation in Fig. 1, and in enlarged section in Fig. 3. The pipe 33 extends into this casting as best shown in Fig. 3, and at the forward end of the pipe, and communicating therewith there is a short downwardly extending tube 35. Swiveled to turn about the axis of this short tube 35 and supported on the casting 34, is a second casting 36, from which there extends a second conveyer pipe 37, similarly equipped with a screw conveyer 38, the construction being such that material is fed by the screw conveyer 32 along the pipe 33, and then drops through the tube 35 into the lower pipe 37, and is fed by the screw conveyer 38 forwardly to the forward end of the pipe 37 where a casting 39 is provided, this casting having a discharge opening 40, through which the slagging material passes in the slagging operation. The screw conveyers in the pipes 33 and 37 are operated in unison so as to cause a continuous feed of material from the hopper 31 to the discharge opening 40, and this is accomplished in the following manner: The screw conveyer 32 includes a hollow shaft 41 which is rotated by a motor 42, properly geared to the hollow shaft, this motor being mounted on the frame 30 alongside of the hopper 31 which is carried by the peel. 'At its forward end this hollow shaft 41 has a bevel gearing 42 which meshes with a bevel gearing 43, free to rotate about the short vertical tube 35, about the axis of which the casting 36 is swiveled. This bevel gear 43 meshes with a bevel gear 44, housed in the casting 36 and secured to a shaft 45 forming a part of the screw conveyer 38 which feeds the material through the swinging distributing pipe 37.

The swinging of the pipe 37 and the distributing of the slagging material is controlled in the following manner. Extending through the hollow shaft 41 of the screw conveyer 32 is a shaft 46 which is rotated by a motor 47, likewise supported on the frame 30, alongside of the hopper 31 carried by the peel, this motor being appropriately geared to the shaft. This shaft 46 extends freely through the hollow screw conveyer shaft 4], and at its forward end is provided with a bevel gear 48 which meshes with a bevel gear 49 carried by the swiveled casting 36, this bevel gear 49 having its axis coincident with the axis of the short vertical tube 35, about which the lower casting part 36 rotates. Thus rotation of the bevel gear 48 rotates the bevel gear 49 and swings the lower easting 36 and the pipe 37 as desired by the operator.

Vith this mechanism material is fed from the hopper located outside of the furnace, and is caused to pass inwardly into the furnace through the jointed pipes and by" properly operating the carriage and swinging the forward jointed end, the material can be deposited over any part of the banks of the furnace, the operator being enabled to cause the material to be deposited over all portions of the furnace banks along the front, rear, or end walls, it being understood that the operator can swing the jointed distributing end of the apparatus and move the carriage either simultaneously or successively, and that the distributing part of the apparatus can be inserted successively in the different charging doors of the furnace. It will be understood also, that he can control the rate of feed of the slagging material by changing the speed of the feeding motor. Both motors 42 and 47, as well as the motors which control the other parts of the machine are controlled from the carriage or operators station, the controllers in all instances being omitted for the sake of clearness.

Above we have described the main features of the preferred form of our invention, but in addition this apparatus will have numerous more or less important features, some of which may. however. be omitted if desired. For example. the forward casting 39 at the free end of the pipe 37 has connected to it by a ball and socket joint 50, a frame 51. carrying a roller 52 which will roll over the slagging material. deposited on the banks of the furnace. and thus compress the same and provide a substantially even surface. This roller can be raised and lowered by a suitable cable 53 connected to the frame 51, and passing through or over suitable guides 54 and 55 (see Fig. 1) carried by the pipes 33 and 37, and will then extend back to the carriage, or to the operators station. Additionally the pipes 33 and 37 are preferably covered with suitable heat insulating lagging 56, for the protection of the pipes. Furthermore, the bevel gearing at and around the point where the two pipe sections are swiveled and housed in the two swiveled castings 34 and 36 may be cooled by a cooling medium such as air or water, which can be supplied through a pipe or pipes :37, it being understood, of course, that if water is used as the cooling medium, a return circulation pipe will be provided in addition to the supply pipe. Similarly the casting 39 may be made hollow and can be cooled by air or water supplied through a pipe or pipes 58.

In addition to the details above explained, we have shown in Fig. 3 a pipe 59, having its discharge end at the discharge opening -10 of the casting 39, this pipe 59 being designed to discharge tar. or tar and steam which will serve as a binder. directly into the slugging material as it is passing through the discharge opening 40. These pipes 58 and 59. as well as the pipe or pipes 57 will extend to the exterior of the apparatus, suitable provision being, of course, made to allow for the relative movements between the lower swinging pipe 37 and the parts with reference to which the said pipe 37 swings.

Above we have described what was previously stated to be the preferred form of our invention. However, our invention in its broad aspects, for the purpose of slagging by mechanical means rather than by hand, can be embodied in forms specifically different from that first described. One of such forms is illustrated in Figs. 5, 6 and 7 wherein we have shown a slagging machine which preferably, but not necessarily, is used in connection with the charging machine, this machine differing from the first principally in the fact that the distributing member which is inserted in the furnace and is designed to be moved about therein, includes also the feeding hopper, whereas in the first construction the hopper is always on the exterior of the furnace. In these figures, 23 represents the peel of the charging machine on which there may be permanently mounted a pair of meters 60 and 61 (see Fig. 7) for controlling the feed of the slagging material, and the movement of the distributing member. Additionally the parts permanently mounted on the peel include motor driven gearing and a coupling housing 62. This slagging machine or apparatus includes in addition to the parts permanently mounted on the peel, certain parts designed to be picked up by the forward end of the peel and fastened thereto in precisely the same manner as previously described, these parts including a casting 63 which receives and is designed to be temporarily locked to the forward end of the peel (see particularly Fig. 5). This casting 63 includes a tubular portion 64 which extends forwardly beyond the peel, and at its forward end is provided with a head 65 to which it pivoted or swiveled by a bolt 66, or other equivalent swiveling means, a casting 67, carrying a hopper 68, at the bottom of which is a screw conveyer 69 which feeds the slagging material toward a discharge opening 70 at the forward end of the hopper. This hopper is designed to be turned about the axis of the bolt 66 so as to distribute the slagging material by means of a hollow shaft 71 which is driven by the motor 60, which as before stated, is preferably permanently mounted on the peel, rearwardly of its forward end. This hollow shaft includes a removable coupling section 71 which is coupled to the motor driven part by the coupling housing 62, and at its forward end is coupled through a similar coupling housing 72 to another section which extends through the tubular portion 64 of the casting 63, this forward portion having at its forward end a bevel gear 73 which meshes with a bevel gear 74 secured to, or formed as a art of the casting 67, as clearly shown in ig. 5.

The screw conveyer 69 which feeds the slagging material from the hopper 68 through the discharge opening 70, is operated by a sectional or jointed shaft 75 extending through the hollow jointed shaft 71, and including sections coupled together by coupling members 76, oneof which is shown in Fig. 5, located respectively in the coupling housings 62 and 72. At its forward end this shaft 75 is provided with a bevel gear 77 which meshes with a bevel gear 7 8 located in the head 65 of the castmg 63. This gear 78 is fixed to a sleeve 79 which surrounds the swiveling pin or bolt 66, and is provided below the gear 78 with a second gear 79 which meshes with a bevel gear 80 on the shaft of the screw conveyer 69 in the hopper.

Thus by these two motors 60 and 61 the distributing member of the apparatus which includes the swiveled hopper, and the rate of feed of the slagging material can be controlled, the controllers which are not shown. being mounted on the operators platform or carriage, as will be readily understood.

When it is desired to slag a furnace or a series of furnaces, the forward portion of the slagging apparatus will be picked up and connected to the peel, and the parts which are thus picked up by the peel will be coupled to the controlling motors in the manner previously explained, and after the slagging operation is completed, the remov able coupling members will be detached, and then the portion which is supported on the front end of the peel will be detached from the latter and deposited on a suitable support, after which the charging machine can be utilized for furnace charging purposes.

As before stated, both forms of the invention may be constructed as complete machines, and operated solely for slagging purposes, instead of being utilized in connection with a charging machine. In the event the machine is used independently of the charging machine, it will include parts which are substantially like, and perform the functions of the frame 16 adapted to travel along a track in front of the furnaces, the carriage 19 which is mounted on the frame and is movable toward and from the furnaces, with a member corresponding to the peel which can be swung vertically about a horizontal axis and which will be inserted in the charging door of the furnace, this member carrying or supporting the parts which can be manipulated to distribute the slagging material precisely in the manner explained above.

While we have shown two forms of our invention, we do not desire to be confined to the same, as other changes in form and arrangement of parts may be made without departure from the spirit and scope of our invention in its broadest aspects.

Having described our invention, what we claim is:

1. In a machine for making up the banks of a furnace, a pair of connected members adapted to be inserted into the charging door of a furnace, and including a distributing member supported by and movable laterally with respect to the other member, and means for supporting said members so that they may be raised and lowered relative to the furnace and fixedly held for operation in any adjusted position and may be moved into and withdrawn from the furnace.

2. In an apparatus for slagging furnaces, said apparatus including a part which is de signed to be moved about on the exterior of the furnace and mounted for movement in a vertical plane and to be firmly supported for operation in any adjusted position, a member supported by said part and adapted to be inserted in the charging door of a furnace, a distributing member movably supported by said first named member and having a discharge opening for slagging material, and means for feeding slagging material through said discharge opening.

3. In an apparatus for slagging furnaces,

a part designed to be moved about on the exterior of the furnace, a member supported by said part and adapted to be inserted in the charging door of a furnace, a distributing member swiveled to said first named member and having means for feeding slagging material therefrom, said first-named part being mounted for movement vertically and to be held in adjusted position whereby the distributing member may be raised and lowered with reference to the furnace and may be operated at the desired elevation.

4. In an apparatus for slagging furnaces, said apparatus including a part which is designed to be moved about on the exterior of the furnace, a member supported by said part and adapted to be inserted in the charging door of a furnace a distributing member niovably supported by said first named member and having a discharge opening for slagging material, means for feeding slagging material through said discharge opening, and means for controlling from the part which is on the exterior of the furnace, the movement of the distributing member and the feeding of slagging material, said controlling means extending len thwise of and substantially parallel to said first-named member to the distributing member and the feeding means therefor.

5. In an apparatus for slagging furnaces, a part designed to be moved about on the exterior of the furnace, a member supported by said part and adapted to be inserted in the charging door of a furnace, a distributing member swiveled to said first named member and having means for feeding slagging material therefrom, and means for controlling from the part which is on the exterior of the furnace, the movement of the distributing member and the feeding of slagging material, said controlling means including a part extending lengthwise through the first named member.

6. In a machine for slagging furnaces, a main part adapted to be moved about on the exterior of a furnace toward and from, and vertically with respect thereto, and to be firmly supported at any desired elevation, a member supported thereby and adapted to be extended into the charging door of a furnace, a distributing member movably supported on said first named member and having a discharge opening, and means for feeding material therethrough.

7. In a machine for slagging furnaces. a main part adapted to be moved about on the exterior of a furnace, a member sup ported thereby and adapted to be extended into the charging door of a furnace, a distributing member wholly supported and movably connected to the forward end of said first named member and having a dis charge opening, means for feeding material therethrough, and means controllable from the part on the exterior of the furnace and extending in substantial parallel relationship to the first-named member for controlling said feeding means and the movement of the distributing member relative to the first named member.

8. In a machine for slagging furnaces, a supporting part adapted to be moved about 011 the exterior of a furnace, and a slagging part in the form of a unit detachably connected to the first named part and including a member adapted when supported by said supporting part to be im serted in the charging door of a furnace, a distributing member swiveled to the forward end of said first named member so as to swing about a substantially vertical axis, said distributing member having a discharge opening, and a feeder for feeding material thereto. and means for operating the feeder and for swinging the distributing member.

9. In a machine for slugging furnaces, a frame adapted to be moved along a track, a carriage movably supported on said frame, adapted to be moved on the frame toward and from the furnace to be slagged, a vertically movable member on the carriage, slagging means supnorted by said member on the carriage and adapted to be inserted in the charging door of a furnace,-said slagging means comprising relatively movable Darts including a distributing member adapted to be moved with reference to a relatively fixed part and having a discharge opening for slagging material, together with means for feeding slagging material thereto, and means for moving the distributing memberand for operating the feeding means.

10. In a machine for slugging furnaces. a frame adapted to be moved along a track parallel to a series of furnaces. a carriage mounted for movement on said frame, an arm supported on said carriage for move ment about a substantiallv horizontal axis, slugging apparatus carried by said arm and adapted to be inserted in the charging door of a furnace and comprising a movable distributing member having a discharge opening for slagging material, means for feeding material to said opening, and mechanism controllable from the exterior of the fur nace when the distributing member is in the furnace for shifting said distributing member and for operating said feedin means.

11. In a slagging machine for furnaces, a movable supporting structure and means for supplying and distributing slagging material, said means being in the form of a unit arranged to be detachably connected to said supporting structure and comprising a hopper adapted to receive slagging material, and conveying means extending therefrom and adapted to be inserted in a furnace, said conveying means including a distributing member movable about a substantially vertical axis with reference to another part of the conveying means.

12. In a slagging machine for furnaces, a movable supporting structure and means for supplying and distributing sla ging material, said means being in the form of a unit designed to be detachably connected to said supporting structure and comprising a hopper adapted to receive slagging material, and conveying means extending therefrom and adapted to be inserted in a furnace, said conveying means including hollow conveying sections, one of which is movable substantially horizontally with respect to another, and constituting the distributing member.

13. In a slagging machine for furnaces, a movable supporting structure and means for supplying and distributing slagging material comprising a hopper adapted to receive slagging material, said means being in the form of a unit adapted to be detachably connected to said supporting structure and conveying means extending therefrom and adapted to be inserted in a furnace, said conveying means including two hollow conveying sections, one swiveled to the other for horizontal movement, and a substantially vertical tubular member connecting the two sections.

14:. In a slagging machine for furnaces, a movable frame and means adapted to be supported thereby for supplying and dis tributing slagging material comprising a hopper adapted to receive slagging material, and conveying means extending therefrom and adapted to be inserted in a furnace, said conveying means including two connected hollow conveying sections, the forward section mounted on the other for substantially horizontal swinging movement, screw feeders in both sections, and connecting means by which the feeder in the rear section drives the forward feeder, the axis of the opening through which the slagging material passes to the distributing member from the member which supports it, and the axis of movement of the distributing member on the member which supports it being coincident.

15. In a slagging machine for furnaces. a movable frame and means adapted to be supported thereby for supplying and distributing slagging material comprising a hopper adapted to receive siagging material. and conveying means extending therefrom and adapted to be inserted in a furnace, said conveying means including two hollow conveying sections, the forward section being swiveled to the rear section for movement about a substantially vertical axis, and means supported in fixed relation to and extending along the rear section to the forward section for swinging the latter.

16. In a slugging machine for furnaces, a movable frame and means adapted to be supported thereby for supplying and distributing slagging material comprising a hopper adapted to receive slagging mate rial, and conveying means extending therefrom and adapted to be inserted in a furnace, said conveying means including two hollow conveying sections, the forward section being swiveled to the rear section for movement about a substantially vertical axis, means supported in fixed relation to and extending along the rear section and connected to the forward section for swinging the latter, and means extending through both sections and connected together at the axis of movement of the forward section for feeding slagging material from the hopper through both sections.

17. In a slugging machine for furnaces, a movable frame and means adapted to be supported thereby for supplying and distributing slagging material comprising a hopper adapted to receive slagging material, conveying means extending forwardly from the hopper and adapted to be inserted in the furnace, said conveying means including two hollow conveying sections, the forward section swiveled to the rear section for movement about a substantially vertical axis, a tubular member connecting the two sections and surrounding the axis of movement of the forward section, a drive shaft and gearing for rotating the forward section, said gearing including a gear concentric with the axis of movement of the forward section, screw feeders extending through both sections, and gearing connecting the two feeders, said gearing including a gear concentric with the axis of movement of the forward section.

18. In a slagging machine for furnaces, a movable frame, a movable carriage mounted on said frame, a hopper mounted on said frame alongside of the carriage, an arm pivotally supported on the carriage for movement about a substantially horizontal axis, and slagging means adapted to be carricd by said arm, said slagging means including a hopper adapted to receive material from the first named hopper on the frame, and conveying means extending forwardly from the second named hopper beyond the arm and adapted to be inserted in a furnace, said conveying means including a part extending forwardly from the arm, and a forward distributing part connected for substantially horizontal movcment to the first named part.

19. In combination with a machine including a frame, a carriage mounted on the frame and a peel supported on the carriage for movement about a substantially horizontal axis, of slagging means adapted to be detachably connected to the peel and to be inserted in the charging door of a furnace, said slagging means including a movable distributing member adapted to receive slagging material and provided with a discharge opening through which the material may be discharged onto the banks of a furnace.

29. In combination with a machine including a frame, a carriage mounted on the frame and a peel supported on the carriage for movement about a substantially horizontal axis, of slagging means adapted to be detachably connected to the peel and to be inserted in the charging door of a furnace, said slugging means including a movable distributing member adapted to receive slagging material and provided with a discharge opening through which material may be dischargedonto the banks of a furnace, and means operated from the exterior o' the furnace when the distributing member is inside the furnace for controlling the movement of the distributing member and the feeding of material through the discharge openin thereof.

21. 1 h combination with a machine comprising a movable frame, a carriage movable back and forth along the same and an arm pivoted on the carriage for movement about a substantially horizontal axis, of slagging means dctachably connected to the arm and adapted to be inserted in the charging door of a furnace, said slagging means including means for mechanically feeding and dis tributing slugging material onto the banks of a furnace.

22. In combination with a machine com prising a movable frame, a carriage movable back and forth along the same, and an arm pivoted on the carriage for movement about a substantially horizontal axis, of slagging means detachably connected to the arm and adapted to be inserted in the charging door of a furnace, said slagging means including a movable material distributing member and a feeder for feeding material therefrom, and means controllable from the outside of the furnace when the distributing member is in the furnace for operating the distributing member and the feeder.

23. The combination with a machine having an arm adapted to be extended into the charging door of a furnace and mounted for movement in a vertical plane and also toward and from the furnace and laterally with respect thereto, of slagging means dotachably connected to the arm and including means for mechanically feeding and distributing slagging material onto the banks of a furnace.

24. The combination with a machine having a peel adapted to be inserted in the charging door of a furnace, and mounted for movement in a vertical plane, and also toward and from the furnace and laterally with respect thereto, of slagging means detachably connected to the peel so as to extend forwardly therefrom, said slagging means including relatively movable connected members having provision for feeding and distributing slagging material in the furnace. In testimony whereof We hereunto afiix our signatures.

EARL N. CLARK. FRANK C. CLARKE. \Vitnesses:

CHAS. PRESLEY, GEORGE BOYD. 

